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Copying objects into a rotated pattern

From: AutoCAD 2011 Essential Training

Video: Copying objects into a rotated pattern

Creating manual copies of our entities can be tedious, especially if the copies also need to be rotated. In this lesson, we're going to learn how to use the Array command to copy our geometry into a rotated pattern. On my screen, I have a simple drawing of a round table and a chair. Let's say I'd like to create some copies of this chair around the outside of the table. Well, if I was to do this manually, it would be very tedious. I'd have to copy this chair into each location, and then I'd also have to rotate it to face the table. Instead, I'm going to use the Array command to create all of my copies in a single step.

Copying objects into a rotated pattern

Creating manual copies of our entities can be tedious, especially if the copies also need to be rotated. In this lesson, we're going to learn how to use the Array command to copy our geometry into a rotated pattern. On my screen, I have a simple drawing of a round table and a chair. Let's say I'd like to create some copies of this chair around the outside of the table. Well, if I was to do this manually, it would be very tedious. I'd have to copy this chair into each location, and then I'd also have to rotate it to face the table. Instead, I'm going to use the Array command to create all of my copies in a single step.

Array is located in the Modify panel of the Ribbon. The icon is right here. I click to launch the tool. It brings up the Array dialog box. This is where I get access to all of the settings that I'll use to build my Array. Notice, there are two types, the Rectangular and the Polar Array. We're going to look at the Polar Array right now. Polar Array allows us to create copies of our entities in a rotational pattern. I'm going to click Select objects, and then I'll select the object I'd like to copy. In this case, it's the chair.

Then I'll right-click. Now let's take care of the center point. The center point is the point at which I will be copying my objects around. I can enter a Coordinate here. I can enter an X and a Y value, or if I click this icon, I can pick a point on screen. I happened to have a running object snap set for center, so I'm going to select the center of this circle. Now let's take a look at the total number of items, how many objects do I want when I'm done? Currently, this is set to 4. I'm going to leave that alone for right now.

Angle to fill, 360, this means I am creating my copies around a full 360 degrees circle. On the right side of this dialog box, I can see a rough preview of what my Array is going to look like. If I was to make a change, for instance, I will change my Angle to fill to 90, and I'll press Tab to accept that value. We can see the preview change over here. I'm going to change this back to 360. Then I'll come down and click Preview. This looks pretty good.

Take a look at my command Line. Notice, we're in Preview Mode right now. That means if I like the Array, I can right-click to accept it, or if I want to make a change, I can press the Esc key to bring back the settings. Now, I think we can fit a few more chairs around this table. I'm going to set my Total number of items to 6, and I'll click Preview. That looks a little better. I'm going to right-click to accept my Array. I'm sure you'll agree that making copies this way is much faster than doing them manually. Now that we understand the workflow behind the Polar Array, let's try and use it in a practical example.

I'm going to pan the drawing over. On my screen, I have a finished drawing of a motorcycle sprocket, and I also have an unfinished version. At first glance, it might appear like this sprocket would be complicated to draw. But, in fact, the only geometry that we really need is this geometry that we see on the left side. The rest of this part can be completed using Polar Array. Let's take a look at these holes first. In the finished example, it looks like I need five sets. So, I'm going to launch the Array command. This will be a Polar Array.

I'll click Select objects, and I'll make a window selection around these circles, and right-click. I will then select the center point of my Array. That will be the center of this circle. Total number of items will be 5. I'll leave this at a full 360 degrees, and I'll click Preview. That looks perfect! I'll right-click to accept the Array. Finally, let's take care of the teeth. This finished sprocket has 42 teeth. As you can see, I've already worked out the geometry, and I've created a single tooth and a single gap.

If my calculations are correct, we should be able to create 42 teeth around this part, and they should all meet seamlessly end-to-end. I'm going to re-launch the Array command. I'll click Select objects and I'll window this geometry. Then I'll right-click. I'll select the center point of my Array, the center of this circle. Total number of items will be 42. Let's click Preview. Everything looks really good! I'm going to right-click to accept the Array. Keep your eyes open for objects that fall into a rotational pattern.

A Polar Array can save you a lot of time over creating manual copies.

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This video is part of

Image for AutoCAD 2011 Essential Training
AutoCAD 2011 Essential Training

100 video lessons · 20206 viewers

Jeff Bartels
Author

 
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  1. 2m 8s
    1. Welcome
      1m 29s
    2. Using the exercise files
      39s
  2. 23m 33s
    1. Understanding model space
      3m 44s
    2. Accessing AutoCAD's tools
      3m 2s
    3. Leveraging dockable palettes
      3m 1s
    4. Monitoring the Status bar
      1m 28s
    5. Understanding the anatomy of a command
      2m 14s
    6. Customizing AutoCAD's preferences
      3m 13s
    7. Accessing help
      3m 38s
    8. Saving a workspace
      3m 13s
  3. 19m 42s
    1. Opening an AutoCAD drawing
      3m 2s
    2. Understanding mouse functions
      2m 44s
    3. Zooming, panning, and regenning
      4m 24s
    4. Working in a multiple-document environment
      2m 39s
    5. Saving your work
      2m 29s
    6. Saving time with templates
      4m 24s
  4. 14m 35s
    1. Constructing lines
      2m 20s
    2. Locking angles with the Ortho and Polar modes
      4m 49s
    3. Drawing circles
      4m 10s
    4. Activating the Heads-Up Display
      3m 16s
  5. 14m 48s
    1. Defining a unit of measure
      6m 28s
    2. Constructing geometry using architectural measurements
      4m 6s
    3. Working with metric units
      4m 14s
  6. 23m 45s
    1. Understanding the Cartesian coordinate system
      4m 53s
    2. Locking to geometry using object snaps
      7m 42s
    3. Automating object snap selection
      7m 26s
    4. Using temporary tracking to find points in space
      3m 44s
  7. 19m 30s
    1. Drawing rectangles
      4m 56s
    2. Drawing polygons
      3m 4s
    3. Creating an ellipse
      5m 9s
    4. Organizing with hatch patterns
      6m 21s
  8. 29m 46s
    1. Making geometric changes using the property changer
      3m 38s
    2. Moving and copying elements
      4m 28s
    3. Rotating elements
      3m 48s
    4. Trimming and extending geometry
      5m 10s
    5. Creating offsets
      6m 16s
    6. Erasing elements
      2m 46s
    7. Undoing and redoing actions
      3m 40s
  9. 11m 52s
    1. Selecting objects using windows
      3m 46s
    2. Adding and removing from selections
      3m 43s
    3. Using keyboard shortcuts
      4m 23s
  10. 51m 12s
    1. Creating fillets
      3m 52s
    2. Creating chamfers
      3m 51s
    3. Copying objects into a rotated pattern
      4m 20s
    4. Copying objects into a rectangular pattern
      4m 58s
    5. Stretching elements
      4m 4s
    6. Creating mirrored copies
      2m 12s
    7. Scaling elements
      5m 0s
    8. Leveraging grips
      7m 20s
    9. Exploding elements
      5m 47s
    10. Joining elements together
      3m 44s
    11. Editing hatch patterns
      6m 4s
  11. 32m 19s
    1. Understanding layers
      2m 43s
    2. Creating and adjusting layers
      7m 20s
    3. Using layers to organize a drawing
      9m 17s
    4. Changing popular settings using the layer control
      3m 30s
    5. Understanding the BYLAYER property
      3m 37s
    6. Restoring previous layer states
      3m 42s
    7. Using existing geometry to set the current layer
      2m 10s
  12. 37m 43s
    1. Creating single-line text
      3m 11s
    2. Justifying text
      5m 18s
    3. Controlling appearance using text styles
      6m 10s
    4. Annotating with multi-line text
      5m 10s
    5. Editing text
      4m 32s
    6. Creating bulleted and numbered lists
      3m 29s
    7. Incorporating symbols
      5m 28s
    8. Correcting spelling errors
      4m 25s
  13. 28m 37s
    1. Creating general dimensions
      4m 13s
    2. Creating continuous and baseline dimensions
      2m 13s
    3. Controlling appearance using dimension styles
      4m 57s
    4. Modifying dimensions
      6m 6s
    5. Creating multileaders
      2m 53s
    6. Controlling appearance using multileader styles
      3m 23s
    7. Modifying multileaders
      4m 52s
  14. 25m 19s
    1. Inserting blocks
      4m 34s
    2. Creating blocks
      6m 41s
    3. Leveraging blocks
      5m 39s
    4. Redefining blocks
      3m 1s
    5. Building a block library
      5m 24s
  15. 13m 50s
    1. Querying a drawing using rollover tooltips
      2m 9s
    2. Taking measurements using the Distance command
      3m 2s
    3. Modifying properties using the Quick Properties tool
      4m 25s
    4. Automating calculations using the Quick Calculator feature
      4m 14s
  16. 36m 6s
    1. Creating quick plots
      6m 4s
    2. Selecting a pen table
      5m 48s
    3. Choosing line weights
      4m 32s
    4. Creating a layout, pt. 1: Choosing a paper size
      2m 42s
    5. Creating a layout, pt. 2: Inserting a title block
      2m 29s
    6. Creating a layout, pt. 3: Cutting viewports
      6m 9s
    7. Reusing layouts
      4m 3s
    8. Organizing layouts
      4m 19s
  17. 16m 49s
    1. Using the Annotative property to automatically size text
      4m 13s
    2. Using the Annotative property to automatically size dimensions
      4m 34s
    3. Using the Annotative property to automatically size multileaders
      3m 58s
    4. Changing the scale assigned to annotations
      4m 4s
  18. 6m 56s
    1. Saving drawings to other formats
      2m 27s
    2. Plotting to the Design Web format
      2m 15s
    3. Plotting to PDF
      1m 20s
    4. Sending drawings via email
      54s
  19. 22s
    1. Goodbye
      22s

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